Collanmore Island is an island off the west coast of Ireland. One of the larger of the islands in Clew Bay, Collanmore Island is a base of Les Glénans, a non-profit sailing school. The base teaches dinghy and catamaran sailing and sail-boarding. Collanmore enjoys magnificent views of Croagh Patrick and the bay. It is accessed by boat from Rosmoney pier, a few kilometres from Westport, County Mayo. There is one registered inhabitant of Collanmore Island.